Quote Originally Posted by Pokemaster Ash View Post
If you're getting the Green Shards for Leaf Stones (which between the Shards and the Leaf Stones found just laying around in the game should get you just enough to get Vileplume, Victreebel, Exeggutor, Shiftry, and Simisage), there actually is a way to get more of all the evolution stones if you need them and that is through Secret Super Training (Super Training using a Pokémon that at one point has hit the EV limit). Almost all of the secret training courses reward good scores with evolution stones.
I just needed it for Shiftry. I got the 3rd one on Route 126, and I now have my Shiftry soon afterwards. :-)